RAM gone missing in BIOS - please help!

  paultek 17 Jun 12
Locked

Hi Folks,

I'm running win xp SP3 on an Asus P5W DH Deluxe and Intel 6600 conroe dual core.

My BIOS and OS has stopped seeing 2gb of my 4gb of RAM possibly after the install of a new graphics card. I can understand why the OS might see less available (the graphics card is slightly more powerful), but I cannot see why the BIOS now sees only 2gb.

On the install of the new graphics card all the correct drivers were installed and the registry cleaned and until recently, the BIOS has seen 4gb of RAM every boot.

I've run the following trouble shooting checks.

RAM SLOT 1 - 2gb RAM stick A /// RAM SLOT 2 - Empty

= 2gb RAM recognised by BIOS

RAM SLOT 1 - 2gb RAM stick B /// RAM SLOT 2 - Empty

= 2gb RAM recognised by BIOS

Conclusion: Both 2gb RAM sticks are working ok.

However,

RAM SLOT 1 - 2gb RAM stick A /// RAM SLOT 2 - 2gb RAM stick B

= 2gb RAM recognised by BIOS

RAM SLOT 1 - 2gb RAM stick A or B /// RAM SLOT 2 - 1gb RAM stick

= 3gb RAM recognised by BIOS

Conclusion = Both RAM slots are working.

I'm stumped. Until recently both 2gb sticks were recognised in the BIOS.

Can anyone help?? I'm right in the middle of an important project..

Many thanks,

P.

  Terry Brown 17 Jun 12

Have you tried removing the Graphics card and putting the old one back in?, and it may be an incompatability problem.

Is the new card controlling some of the motherboard (Main) memory, making it unavailable for other useages?

Have you checked in the BIOS to see how the memory for the graphics card is set up, as it may not be using it's built in memory

From BIOS reset to the defaults and this should find the memory.

Terry

  paultek 17 Jun 12

Thanks for the reply, Terry

Have you tried removing the Graphics card and putting the old one back in?, and it may be an incompatability problem.

unfortunately I can't - the old one fried

Is the new card controlling some of the motherboard (Main) memory, making it unavailable for other useages?

Have you checked in the BIOS to see how the memory for the graphics card is set up, as it may not be using it's built in memory

I've looked in the BIOS and as far as I'm aware, the BIOS doesn't seem to have a facility for doing this. How would this explain the results of the second troubleshooting check, though?

From BIOS reset to the defaults and this should find the memory.

Will give this a go, thanks again

  paultek 17 Jun 12

Would also like to add that, the graphics card is compatible with my motherboard and the correct drivers have been installed.

  paultek 17 Jun 12

Reset defaults and no joy, unfortunately.

On further investigation, BIOS is saying that 2gb of RAM is available and 2gb is appropriated. Will investigate further.

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